6661051565 has 8 divisors (see below), whose sum is σ = 9135156480. Its totient is φ = 4567578192.

The previous prime is 6661051549. The next prime is 6661051583. The reversal of 6661051565 is 5651501666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6661051565 - 2⁴ = 6661051549 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95157845 + ... + 95157914.

It is an arithmetic number, because the mean of its divisors is an integer number (1141894560).

Almost surely, 2^6661051565 is an apocalyptic number.

It is an amenable number.

6661051565 is a deficient number, since it is larger than the sum of its proper divisors (2474104915).

6661051565 is a wasteful number, since it uses less digits than its factorization.

6661051565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190315771.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 6661051565 is about 81615.2655144857. The cubic root of 6661051565 is about 1881.5435080438.

The spelling of 6661051565 in words is "six billion, six hundred sixty-one million, fifty-one thousand, five hundred sixty-five".